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Application filed by Harmaniak Jan, Ervin Ing Kovacik, Pavol Ing Konecny, Ladislav Novak, Jaroslav Ing ZemanekfiledCriticalHarmaniak Jan
Priority to CS836478ApriorityCriticalpatent/CS235580B1/en
Publication of CS647883A1publicationCriticalpatent/CS647883A1/en
Publication of CS235580B1publicationCriticalpatent/CS235580B1/en